B1637-RIGHT HI BEAM CONTROL CIRCUIT LOW
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
- With the Highbeam Headlamps activated.
- Set Condition:
- When the FCM detects a LOW condition.
| Possible Causes |
| (L34) RIGHT HIGHBEAM OUTPUT CIRCUIT |
| FRONT CONTROL MODULE |
Diagnostic Test
1. INTERMITTENT CONDITIONTurn the ignition on.
With the Scan Tool, clear all FCM DTC's.
Turn the Highbeam Headlamps on.
With the Scan Tool read the DTC information.
Does the Scan Tool read: B1637-RIGHT HI BEAM CONTROL CIRCUIT LOW?
Yes
- Go To 2
No
- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
2. (L34) RIGHT HIGHBEAM OUTPUT CIRCUIT
Turn the ignition off.
Disconnect the FCM C2 harness connector.
Disconnect the Right Headlamp harness connector.
Measure the resistance between ground and the Right Highbeam Output circuit.
Is the resistance below 5.0 ohms?
Yes
- Repair the (L34) Right Highbeam Output circuit for a short to ground condition.
- Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)
No
- Replace the Front Control Module (FCM) in accordance with the service information.
- Perform the BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL MODULES - STANDARD PROCEDURE)